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TLS Online TPP Program

#Question id: 3623

To carry out a complementation test, which of the following statement is correct?

#Section 3: Genetics, Cellular and Molecular Biology

  1. If the mutations are allelic then the heterozygous offspring have only mutant alleles and exhibit wild phenotype:

  2. The mutations occur at different loci, the heterozygous offspring inherit a mutant and a wild-type allele each locus

  3. If the mutations are allelic then the heterozygous offspring have only wild type alleles and exhibit a wild phenotype

  4. The mutations occur at different loci, the heterozygous offspring inherit a mutant allele only

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TLS Online TPP Program

#Question id: 2150

#Section 2: General Biology

Which of the following increase(s) membrane fluidity?
TLS Online TPP Program

#Question id: 2151

#Section 2: General Biology

Which of the following statement(s) is (are) true of transmembrane proteins?

a. All contain a hydrophobic α helix.

b. Some serve as membrane attachment sites for peripheral membrane proteins.

c. Some contain more than one membrane-spanning domain.

d. All are asymmetrically oriented in the lipid bilayer.
TLS Online TPP Program

#Question id: 2152

#Section 2: General Biology

Precursors of membrane phospholipids are

a. soluble in the cytosol.                    

b. incorporated into biosynthetic intermediates.

c. sometimes complexed with fatty-acid-binding proteins.

d. stored in glycerolosomes.

e. sometimes activated by conjugation with CDP.
TLS Online TPP Program

#Question id: 2153

#Section 2: General Biology

Membrane phospholipids include

a. cholesterol.            

b. plasmologens.        

c. sphingolipids.         

d. triglycerides.                      

e. bile acids.
TLS Online TPP Program

#Question id: 2154

#Section 2: General Biology

Membrane lipids are distributed appropriately between the two leaflets of a given membrane by

a. dockases.    

b. trumpases.              

c. fatty acid desaturases.        

d. flippases.    

e. transmembrane tunnelases.
TLS Online TPP Program

#Question id: 2258

#Section 3: Genetics, Cellular and Molecular Biology

The arrangement of microtubules in eukaryotic flagella is referred to as